The most effective in controlling the confounding variables is matched pairs design.
<h3>What is a matched pair design experiment?</h3>
A matched pairs design is when participants are matched based on shared characteristics that is of importance to the experiment. One member of the pair is put in the control group while the other is put in the experimental group.
Here are the options:
A completely randomized design experiment
A longitudinal observational study
A retrospective observational study
A matched-pair design experiment
To learn more about matched-pair design experiment, please check: brainly.com/question/23413412
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We have:
- 49KN = 49 × 1000 = 49000N
- 1 foot² = 30² = 900 cm²
So: 49KN/foot² = 49000N/900 cm² = 54,5 N/cm²
P/s: 1 KN = 1000 N
ANSWER: 54,5 N/cm²
Ok done. Thank to me :>
2.0612439*10^7 should be your answer
Answer:
5*5*5 - 12 / 3 = 121
Step-by-step explanation:
5^3 = 5 * 5 * 5 = 25 * 5 = 125
12/3 = 4
We evaluate exponents first: 5^3 = 125
Then division: 12/3 = 4
Then subtraction: 125 - 4 = 121
Cool. I hope she knows how to do it. (ahem)